I’ve struggled to navigate the command line since switching to iTerm2, but Marius’s post about remapping the arrow and delete keys fixed that issue.

Go to Profiles > Keys > Key Mapping to add/alter the mappings listed below:

Shortcut	Command	Action	Send
⌥ ←	Jump to start of word	Send Escape Sequence	b
⌥ →	Jump to end of word	Send Escape Sequence	f
⌘ ←	Jump to start of line	Send Hex Code	0x01
⌘ →	Jump to end of line	Send Hex Code	0x05
⌥ ⌫	Delete to start of word	Send Hex Code	0x17
⌘ ⌫	Delete entire line	Send Hex Code	0x15